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Innovative, built-in skimmer adjusts to aquarium water level for effective removal of oily, organic film and scum from the surface. Three-level intake system extracts water from the surface, middle, and bottom for complete aquarium filtration. Includes 2 filter cartridges for efficient, mechanical, chemical, and biological filtration. For freshwater or saltwater aquariums.

Comes in 4 sizes, I have the 55 and 75 models. Great for using custom media. skimmer works like a charm, its a good HOB filter.

Not perfect though. It is a tad bit flimsy, can be rattly if its not all snug, and if the water level is low, it will rattle itself loose, making more noise, and when the filter gets clogged up, it sounds like a waterfall. Skimmer will suck up air when water level gets low, making a loud churning noise, and again, rattling things loose.

I have it running side by side with an emperor 400 and honestly aside from the bio-wheels its a better performing filter. Higher flow rate, the media is a breeze to clean, change, and setup as needed, and it starts like a champ everytime.

------------------------------Who is "General Failure" and why is he reading my hard drive?